12664541 has 8 divisors (see below), whose sum is σ = 13610880. Its totient is φ = 11740608.

The previous prime is 12664537. The next prime is 12664543. The reversal of 12664541 is 14546621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12664541 - 2² = 12664537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4421 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (1701360).

Almost surely, 2^12664541 is an apocalyptic number.

It is an amenable number.

12664541 is a deficient number, since it is larger than the sum of its proper divisors (946339).

12664541 is a wasteful number, since it uses less digits than its factorization.

12664541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11203.

The product of its digits is 5760, while the sum is 29.

The square root of 12664541 is about 3558.7274410946. The cubic root of 12664541 is about 233.0933148675.

The spelling of 12664541 in words is "twelve million, six hundred sixty-four thousand, five hundred forty-one".